I open a new terminal with
bash as follows.
gnome-terminal -x bash gnome-terminal -e bash gnome-terminal -- bash
Somewhere I read that to use a custom BASH RC file, you have to run:
bash --login <custom_rc>
I'm not sure if it works, but the problem is that it doesn't leave the interpreter open like with the previous commands. I have also tried with:
bash -c "source <custom_rc>"
But the same thing happens, after reading the configuration closes.